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A B737 flight crew receive a 'sink rate' call from the GPWS while on a stabilized approach into okayama, first officer.
| Attributes | |
| ACN | 613764 |
| Time | |
| Date | 200403 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : rjob.airport |
| State Reference | FO |
| Altitude | agl single value : 250 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Windshear Rain Fog |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : rjob.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 7 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Experience | flight time last 90 days : 3200 flight time total : 12000 flight time type : 130 |
| ASRS Report | 613764 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter : turbulence inflight encounter : weather |
| Independent Detector | aircraft equipment : gpws other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action flight crew : overrode automation flight crew : regained aircraft control flight crew : returned to assigned altitude flight crew : exited adverse environment |
| Supplementary | |
| Problem Areas | Airport Environmental Factor Weather Aircraft |
| Primary Problem | Aircraft |
Narrative:
Conducted ILS VOR/DME approach to runway 7 in IMC with gusty wind conditions which were varying in direction throughout the approach. After breaking out of IMC and while setting up for landing in gusty conditions, GPWS 'sink rate' sounded several times with a normal rate of descent noted by pilot monitoring and PF. Approach was stabilized at all times during the ILS and during such times below decision altitude. After landing, the pilot monitoring noted that the 'sink rates' are a common occurrence at the airport. Neither pilot monitor nor PF fly into airport on regular basis. No notes provided other than high terrain warnings on page 10-7 manual. Consideration should be given to include some information concerning possible GPWS warnings when stabilized to runway 7.
Original NASA ASRS Text
Title: A B737 FLT CREW RECEIVE A 'SINK RATE' CALL FROM THE GPWS WHILE ON A STABILIZED APCH INTO OKAYAMA, FO.
Narrative: CONDUCTED ILS VOR/DME APCH TO RWY 7 IN IMC WITH GUSTY WIND CONDITIONS WHICH WERE VARYING IN DIRECTION THROUGHOUT THE APCH. AFTER BREAKING OUT OF IMC AND WHILE SETTING UP FOR LNDG IN GUSTY CONDITIONS, GPWS 'SINK RATE' SOUNDED SEVERAL TIMES WITH A NORMAL RATE OF DSCNT NOTED BY PLT MONITORING AND PF. APCH WAS STABILIZED AT ALL TIMES DURING THE ILS AND DURING SUCH TIMES BELOW DECISION ALT. AFTER LNDG, THE PLT MONITORING NOTED THAT THE 'SINK RATES' ARE A COMMON OCCURRENCE AT THE ARPT. NEITHER PLT MONITOR NOR PF FLY INTO ARPT ON REGULAR BASIS. NO NOTES PROVIDED OTHER THAN HIGH TERRAIN WARNINGS ON PAGE 10-7 MANUAL. CONSIDERATION SHOULD BE GIVEN TO INCLUDE SOME INFO CONCERNING POSSIBLE GPWS WARNINGS WHEN STABILIZED TO RWY 7.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.